Telemotor



M. B. vBENSONl TELEMOTOR. APPLICATION FILED DEC-3,19l8` 1,345,069.Patented June 29, 1920.

2 SHEETS-SHEET l.

INVENTOR.

ML B. BENSON.

TELEMQTOR. APPLICATION H LED DEC.3, 191s.

im .y

A TTORNEYS.

UNITED sTATEs` PATENT oT-F-ICE.

MELVIN B. BENSON, 0F SUPERIOR, WISCONSIN.

' TELEMOTOR Specification of IietterslatentA Patented June 29, 1920.

Application mea December s, 1era. serial No. '265,162.

To allfwhom t may concern:

, Be it known that I, lMELVIN B. BnNsN, a citizen )of the UnitedStates,` residing at Superior", in the county of Douglas` andl State ofWisconsin, have invented certain new and usefil Improvements inTelemotors, of`

which I do hereby declare the following to bea specification. Y

My invention relates to telemotors and has for one of its objects theprovision Vof improve'ments in steering gear for vessels. It

as for a further obj ect the provision of improved means for operatingthe valve of an engine distant from the station of the operator.Heretofore-the operative action of devices of this type has tended tocontinue,4

by reason of momentum, longer than desired7 and to carry certaintransitory or. reciprocable parts `of the device/past the stations atwhich they were intended tostop. One feature of my invention is theprovision of a simple and efficient' automatic brake t0 compensate suchtendency. With these and other objects in view, it consists of theconstructions, combinations and arrangements of parts hereinafterdescribed and claimed.

In the drawings, Figure 1lis a diagrammatic plan view of one. form ofstructure embodying my said invention. Fig. 2 is a central verticalsection, partly in side ele-` vation, of a hereinafter describedcontroller case and contents, forming part of my said invention. Fig. 3is a fragmentary top plan view, partly in central horizontal sectionandpartly broken away, of a hereinafter described reciprocable collectorbar Contact and series of opposed stationary contacts.

In the drawings; 1 is a source of electricity as a generator ofanysuitable type, one of the ples, as the plus p ole, of which generatoriselectrically connected in any'suit yable manner, las by a wire l, post1b, rail 1,

Contact point 1d, and wire 1?. with a contact point 1f, which latterpoint is adapted to be moved by any suitable means as by a lever 2,spindle 2, and contact supporting arm 2b, into acontact with one oranother of a plurality of stationary 'contact points 3, 4:, 5. Said poleof said generator is also connected in any suitable manner as by a wire1g with one' pole of the shunt field 6 of a motor 7 of any suitabletype, and is also connectedl through a normally open contact l8, andwire 9 with one of the armature Apoles as 7 of said motor, andthroughsaid armature and wire 11 and a normally open contact 15 and wire13 with one of thepoles of-a series field 14 for said'motor. Saldpluspole is also connectedI through said wire 1g, a normally open con`.tact 10and wire 11 with the opposite. polev 7 b of sald armature, andthrough said armature and wire and a normally open contact 12 andsaid-wire 13, with said pole ofsaid series field. The opposite` pole ofsaid series field is connected through wires 16 and 17 with the opposlteor minus pole, of said generator, and the opposite pole of said shuntfield is'connected through'wires 18 and. 17 w1th said opposite or minuspole of said generator.

Said plus pole of said generator is also .connected through normallyclosed contacts 19 and 2O with one pole of an electromagnet 21, theopposite pole o fwhich magnet is connected to said minus polel ofy saidgenerator. Said poles 7"L and 7" of said motor are electricallyconnected to each other through a resistance 22 and a normally closedcontact .23, which contact 23 is'adapted to be closed by the operationof said ma et 21 upon an armature 21a of any suitab e structure, Ab'ywhich one of the points of said contact 23 is carried or moved. Saidcontact points 3,

4 and .5 (it being understood that there may y be any greater number ofthem, and an equal' number of lthe hereinafter described correspendingnormally closed contact points) are connected by wires, as,respectively, 3,

4a and 5a with corresponding stationary contact points 3b, 4J and 5bmounted in a support 24 of any suitable material or structure, as in astationary block 24 ofl insulating material by which the are directlyinsulated from each other.

times with anyone or another ofusaid condapted to contact at varioustacts 3b, 4b and 5b, and at all times with all any one or another ofsaid contacts 3b, 4i and 1j 5* at various 'times from either of saidsections 25 and 25a. Said section 25 is electr?. cally connected in anysuitable manner, as by a' stationary contact 28 adapted to bear thereonat all times, and by a wire 29, with l one pole of amagnet 30 theopposite pole of which is connected to the mmus pole of:

. said motor.

said generator. Said magnet 30 is adapted t0 simultaneously close thenormally openand at the same time said magnet is adapted to open thenormally closed contact 19 by the operation ofan armature by which oneof the points of the latter contact is carried.`

Said contact 25a is'connected inany suitable manner, as by a stationarycontact 31, adapted to bear thereon at all times, and a Wire 31n withone pole of a magnet 32, the opposite pole of Which is connected to theminus pole of said generator. Said magnet 32 is adapted tosimultaneously close the normally open contacts 10 and 12 by theoperation-of an armature 321 of any suitable structure by Which one ofthe' points of each of said contacts is carried or moved; and at thesame time said magnet 32 is Aadapted to open the contact 20 by theoperation of an armature by Which one of the points of the lattercontact is carried or moved.

Said carriage 26 is adapted to be operated by said motor through anysuitable transmission mechanism, preferably comprising a slidable block33 adapted to be -moved along guides, 34, 35 by a Worm 36 j ournaled instationary bearings of any suitable construction as37, 38; said Wormengaging said y block intermediate of' its ends. Mounted on the shaft ofsaid AWorm at one end is a gear 39 adapted to engage one of a'train ofgears as 40, 41, the other of which train is adapted to be driven b apinion 42 on the shaft oi' lXivotally secured at one end to said blockis a link 43, adapted to be connected at its opposite end to the valvestem (not shown) of a steam steering or other engine (not shown) foroperating said valve.

Under the conditions shownin Fig. 1, the device is at rest, on center.vIn operation, if the contact arm be moved so that the 'Contact point 1fcovers the point 5, the current Will flow from said generator to rail 1;vthence to the point 1d, to point 1f, to point 5, by Wire 5a to point5b; thence through contacts 25l 31 and magnet 32 back to the generator.he magnet 32 operates the armature 32, causing it to close the normallyopen contacts 10 and 12, and at the same time opens the normally closedcontact 20. The current Will then flow through the Wire 1g, normally)open contact 10, Wire 11, pole 7b and armature of the motor 7,

thence through the Wire 9` normally open contact 12, Wire 13, seriesfield 14, and wires 16 and 17 back to said generator. The motorthereupon being energized and operating through the pinion 42, train ofgears, Worm and slidable block, moves said carriage so that theinsulation block 27 'is car ried under said contact point 5b, therebycutting off the current from the magnet 32, which thereupon drops itsarmature 32 Which opens the contacts 10 and 12, thus cutting oif thecurrent from said motor. At the same time saidl magnet drops thearmature (if it be a separate one) which carries or moves rone ofthepoints of the contact 20, thus permitting said contact 2() to close.Thereupon, current from the generator Will How through Wire 1g, contacts19 and 20, and the magnet 21, back to the generator, and at the sametime through said Wire 1S, shunt field 6, Wires 18 and 17 back .to thegenerator. The magnet 21 attracts its armature 21, causing it to closethe contact 23, whereupon the poles of said armature becomeshortcircuited through Wires 9 and 11, resistance element 22 and contact23. The motor, under previously acquired momentum, thereupon operates asa generator and automatic brake, the excess energy of which is absorbedor neutralized by said resistance element, and the operation of saidmotor is thus promptly stopped. In like manner the movement of thecarriage may be continued in the same direc- `tion, by the addition ofpoints and Wires similar to said points and Wires 5, 5f1 and 5bsuccessively at further distances from said point 4, and by electricallyconnecting said point 1t with any one of them; the carriage continuingits movement in the same direction until the insulation block 27 cutsthe circuit. y

If at any time the point 1f is brought into electrical communicationWith a point similar to point 4.at the opposite s1de of the temporaryposition of the insulation block 27, the rotation of said motor and oit'the movement of said carriage will be reversed as follows: The currentfrom said generator 1 Will then travel through section 25 of saidcollector bar; thence through the Wire 29 and magnet 30 back to thegenerator. Said magnet 30 Will operate its armature 30"L causing it toclose contacts 8 and 15, and at lthe same time openthe contact 19 andthus cut the circuit through said resistance. The current from thegenerator 1 will now flow through the Wire 1g, Contact 8, Wire 9 pole 7aand lmotor 7; thence by wire 11 contact 15 Wire 13 series field 14 Wires16 vand 17 back t0 said' generator. The motor will therefore bereversed, and 'through said pinion, gears, Worm and sliding block willmove said carriage in said opposite direction until said insulationblock 27 cuts the current from said magnet 30. Thereupon said magnet 30will drop its armature, or armatures, thus opening the contacts 8 and 15and closing the contact 19. The current 'from the generator to the motorWill thus be cut, and the circuit from the motor-generator through theresistance 22Will be established. At the same time the circuit throughsaid series field will be cutgandestablished through-A said shunt field.It 'will berobserved that the shifting of the block 27 back and forthoperates to transfer a variable number of the points 9,54* and 5btemporarily from oneicircuit to another, accordin to the direction anddistance that said lock 27 r is shifted.

Without said resistance circuit, the tendcy would be for the momentum ofthe motor to carry the insulation block 27 pasttlie intended stoppingpoint, thus permitting the circuit to close through thev reversingsection of the collector-barand inlike manner to shift said block backand forth for gradually shortening distances until it came to rest atthe proper position. The brake,

therefore, is an important feature of the comprising a source ofelectricity, a normally open contact, a motor armature, asecy ondnormally open contact, and a seriesfeld for said motor; a secondelectric circuit comprising said source a plurality of normally opencontacts in parallel, a plurality of normally closed contacts inparallel, each of said closed contacts bein in series with acorresponding one of sai normally open contacts of said second circuit,and an electromagnet, said magnet being adapted to close the normallyopen contacts of said firstcircuit;

one of the normally open contacts of said second circuit; means adaptedto be'mechanically operated by said motor to open any fone of saidnormally closed contacts of said second 'circuit after the correspondingnormally open contact of said second' circuit has been closed; athirdelectric circuit, comprising said source, a normally closed contacttact, the armature of an electric motor, a

second normally op'en contact, and the'field of saidfmotor; .a secondelectric .circuit including saidsource, a plurality of normally opencontacts in parallel, -a plurality ofnormally closed contacts inparallel, each of said normally closed contacts being in series in parmanually operatable means forV closing any -with a corresponding one ofthe normally open contacts of said second circuit; means for closing anyone of the normally open contacts of said second circuit; means for,

automatically opening the corresponding vone of said normallyclosedcontacts after the closing of any one of the normally open p vcontactsof saith-secondcircuit; a third electric circuit including the armatureof said motor, a normally closed contact and a-resistance element; a'fourth electric circuit including said source a normally closed contactand a coil "for magnetizing, a translation device; means governed bysaid second circuit for closing the first and second norfor opening thenormally closed' contact f-A said fourth circuit; said translationdevice being adapted to close the normally closed contact of saidthirdcircuit when said first circuit is open; thecontact opening means ofsaid second circuit being governed by said first circuit; and a fifthcircuit comprising.

said source and a shunt field for said motor. 3. The combination of anelectric circuit including a source of electricity, a normally opencontact, the armature of an electric motor, a' second normally opencontact, and a series field for said motor; a second electric circuitincluding said source, a normally open contact, said armature, a second`normally open contact, and said series'field,

said second circuit leading through said armature in a directionopposite to the direction of said first circuit therethrough; a thirdelectric circuit and a fourth electric circuit each including saidIsource, a plu- 'ralityof normally open contacts in parallel,

and a lurality ofv normally closed contacts aqlel, each of said normallyclosed contacts being in series with a corresponding one of saidnormally. open contacts;;means for closinor any one'of the open contactsof said thir means being adapted in operation to relatively transfer avariable number of the open contacts ofsaid'third circuit temporarily tothe fourth circuit, or vice versa; means for opening any one ofthe'normally closed contacts ofsaid third or fourth circuits, saidopening means being adapted in operation to relatively transfer -avariable number of said normally. closed contacts from said thirdcircuit temporarily to said fourth circuit, or vice versa; a fthelectric circuit comprising said source, a normally closed contact, anda second normally closed contact; a sixth electric circuit comprisingsaid armature, a normally closed contact and a resistance element;,aseventh electric circuit comprising s'aid source and a shunt field forsaid motor; means governed by said third circuit for closing thenormally open contacts of said rst circuit and for opening one of thenormally closed contacts of said or--f`ourth circuit, said closingl 80mally open contacts of said first circuit and fifth circuit meansgoverned by said fourth circuit for Closing the normally open oon'-taets of said second circuit and for opening the other normally closedContact of said fifth circuit; means governed by said fifth circuit forclosing the normally closed contact of said sixth circuit; andmechanical transmission means adapted to be driven by said motor foroperating one of the Contact 10 transfer means of said third and fourthoircuits, the other contact transfer means of said third and fourthcircuits being adapted to be manually operated.

In testimony whereof, I hereunto allix my signature, in presence of twoWitnesses.

MELVIN B. BEVSON.-

lVitnesses:

CLARENCE J. HARTLEY, F. H. ZIRN.

